sfc-publish.php

<?php
// add the meta boxes
add_action('admin_menu', 'sfc_publish_meta_box_add');
function sfc_publish_meta_box_add() {
	$post_types = apply_filters('sfc_publish_post_types', get_post_types( array('public' => true), 'objects' ) );
	foreach ( $post_types as $post_type ) {
		add_meta_box('sfc-publish-div', __('Facebook Publisher', 'sfc'), 'sfc_publish_meta_box', $post_type->name, 'side');
	}
}

// add the admin sections to the sfc page
add_action('admin_init', 'sfc_publish_admin_init');
function sfc_publish_admin_init() {
	add_settings_section('sfc_publish', __('Publish Settings', 'sfc'), 'sfc_publish_section_callback', 'sfc');
	add_settings_field('sfc_publish_flags', __('Automatic Publishing', 'sfc'), 'sfc_publish_auto_callback', 'sfc', 'sfc_publish');
	add_settings_field('sfc_publish_extended_permissions', __('Extended Permissions', 'sfc'), 'sfc_publish_extended_callback', 'sfc', 'sfc_publish');
	add_settings_field('sfc_publish_token_checks', __('Token Checks', 'sfc'), 'sfc_publish_token_checks', 'sfc', 'sfc_publish');
	wp_enqueue_script('jquery');
}

function sfc_publish_section_callback() {
	echo "<p>".__('Settings for the SFC-Publish plugin. The manual Facebook Publishing buttons can be found on the Edit Post or Edit Page screen, after you publish a post. If you can\'t find them, try scrolling down or seeing if you have the box disabled in the Options dropdown.', 'sfc')."</p>";
}

function sfc_publish_auto_callback() {
	$options = get_option('sfc_options');
	if (!isset($options['autopublish_app'])) $options['autopublish_app'] = false;
	if (!isset($options['autopublish_profile'])) $options['autopublish_profile'] = false;
	?>
	<p><label>Automatically Publish to Facebook <?php
	if ($options['fanpage']) echo 'Fan Page';
	else echo 'Application';
	?>: <input type="checkbox" name="sfc_options[autopublish_app]" value="1" <?php checked('1', $options['autopublish_app']); ?> /></label>
	</p>
	<p><label><?php _e('Automatically Publish to Facebook Profile:', 'sfc'); ?> <input type="checkbox" name="sfc_options[autopublish_profile]" value="1" <?php checked('1', $options['autopublish_profile']); ?> /></label></p>
<?php
}

function sfc_publish_extended_callback() {
	$options = get_option('sfc_options');

?><p><?php _e('In order for the SFC-Publish plugin to be able to publish your posts automatically, you must grant some "Extended Permissions"
to the plugin.', 'sfc'); ?></p>
<p><?php _e('To do so, click this button. This will also cause the page to refresh, in order to save the results.','sfc'); ?></p>
<input type="hidden" id="token" name="sfc_options[access_token]" value="<?php echo $options['access_token']; ?>" />
<script type="text/javascript">
function sfcPubToken() {
	FB.getLoginStatus(function(response) {
		if (response.authResponse.accessToken) {
			jQuery('#token').val(response.authResponse.accessToken);
			jQuery('#submit').click();
		}
	});
}
</script>
<fb:login-button scope="offline_access,publish_stream,manage_pages" onlogin="sfcPubToken();"><fb:intl>Grant SFC Permissions</fb:intl></fb:login-button>
<?php
}

function sfc_publish_token_checks() {
	$options = get_option('sfc_options');
?>
<p><?php _e('In order for SFC to be able to automatically publish to Facebook, it must retrieve and save "tokens" from Facebook. The status of each of these is given below.','sfc'); ?></p>
<ul>
<?php
	if (!empty($options['user']) && !empty($options['access_token'])) {
		?><li style="background-color: #c3ff88; border-color: #8dff1c;"><?php _e('User ID and Access Token found! Automatic profile publishing is ready to go!', 'sfc'); ?></li><?php
	} else {
		?><li class="error"><?php _e('No User or Access Token found. Cannot autopublish to Facebook Profile. Try re-saving this page.', 'sfc'); ?></li><?php
	}

	if (!empty($options['app_access_token'])) {
		?><li style="background-color: #c3ff88; border-color: #8dff1c;"><?php _e('Application Access Token found! Automatic application wall publishing is ready to go!', 'sfc'); ?></li><?php
	} else {
		?><li class="error"><?php _e('Application Access Token not found. Cannot autopublish to Facebook Application. Try re-saving this page.', 'sfc'); ?></li><?php
	}

	if (!empty($options['fanpage']) && !empty($options['page_access_token'])) {
		?><li style="background-color: #c3ff88; border-color: #8dff1c;"><?php _e('Fan Page Access Token found! Automatic fan page publishing is ready to go!', 'sfc'); ?></li><?php
	} else if (!empty($options['fanpage']) && empty($options['page_access_token'])) {
		?><li class="error"><?php _e('Fan Page Access Token not found. Cannot autopublish to Facebook Page. Try re-saving this page.', 'sfc'); ?></li><?php
	}

	?>
</ul>

	<!--
	DEBUG INFO. Do not give this information to anybody, ever:
	User: <?php echo $options['user']; ?>

	Access Token: <?php echo $options['access_token']; ?>

	App Access Token: <?php echo $options['app_access_token']; ?>

	Page Access Token: <?php echo $options['page_access_token']; ?>

	-->
<?php
}

function sfc_publish_meta_box( $post ) {
	$options = get_option('sfc_options');

	if ($post->post_status == 'private') {
		echo '<p>'.__('Why would you put private posts on Facebook, for all to see?', 'sfc').'</p>';
		return;
	}

	if ($post->post_status !== 'publish') {
		echo '<p>'.__('After publishing the post, you can send it to Facebook from here.', 'sfc').'</p>';
		return;
	}

	// look for the images/video to add with image_src
	$images = sfc_base_find_images($post);
	$video = sfc_base_find_video($post);
	if (preg_match('|http://[^/]*youtube\.com/v/([^/?&]+)|i', $video[''], $matches) ) {
		array_unshift($images, "http://img.youtube.com/vi/{$matches[1]}/0.jpg");
	}
 
 	$feed['app_id'] = $options["appid"];
 	$feed['method'] = 'feed';
 	$feed['display'] = 'iframe';
 	$permalink = apply_filters('sfc_publish_permalink',wp_get_shortlink($post->ID),$post->ID);
 	$real_permalink = get_permalink($post->ID);
 	$feed['link'] = $permalink;
	if ($images) $feed['picture'] = $images[0];
	if ($video) $feed['source'] = $video[''];
	$feed['name'] = $post->post_title;
	$feed['description'] = sfc_base_make_excerpt($post);
	$feed['caption'] = ' ';
	$actions[0]['name'] = 'Share';
	$actions[0]['link'] = 'http://www.facebook.com/share.php?u='.urlencode($permalink);
	
	$feed['actions'] = json_encode($actions);

	// personal publish
	$ui = $feed;
 	$cookie = sfc_cookie_parse();
	if ($cookie['access_token']) $ui['access_token'] = $cookie['access_token'];
	else $ui['access_token'] = $options['access_token'];
	?>
	<script type="text/javascript">
	function sfcPersonalPublish() {
		FB.ui(<?php echo json_encode($ui); ?>);
	}

	<?php
	if ($options['fanpage']) {
		$ui['from'] = $options['fanpage'];
		$ui['to'] = $options['fanpage'];
		//$ui['access_token'] = $options['page_access_token'];
	} else {
		$ui['from'] = $options['appid'];
		$ui['to'] = $options['appid'];
		//$ui['access_token'] = $options['app_access_token'];
	}
	?>
	function sfcPublish() {
		FB.ui(<?php echo json_encode($ui); ?>);
	}

	function sfcShowPubButtons() {
		jQuery('#sfc-publish-buttons').html('<input type="button" class="button-primary" onclick="sfcPublish(); return false;" value="<?php if ($options["fanpage"]) echo addslashes(__('Publish to Facebook Fan Page', 'sfc')); else echo addslashes(__('Publish to Facebook Application', 'sfc')); ?>" /><input type="button" class="button-primary" onclick="sfcPersonalPublish(); return false;" value="<?php echo addslashes(__('Publish to your Facebook Profile', 'sfc')); ?>" />');
	}

	</script>
	<div id="sfc-publish-buttons"><p><?php _e('If you can see this, then there is some form of problem showing you the Facebook publishing buttons. This may be caused by a plugin conflict or some form of bad javascript on this page. Try reloading or disabling other plugins to find the source of the problem.', 'sfc'); ?></p></div>
	<?php

	add_action('sfc_async_init','sfc_publish_show_buttons');
}

function sfc_publish_show_buttons() {
?>
FB.getLoginStatus(function(response) {
	if (response.authResponse) {
		sfcShowPubButtons();
	} else {
		jQuery('#sfc-publish-buttons').html('<fb:login-button v="2" scope="offline_access,publish_stream" onlogin="sfcShowPubButtons();"><fb:intl><?php echo addslashes(__('Connect with Facebook', 'sfc')); ?></fb:intl></fb:login-button>');
		FB.XFBML.parse();
	}
});
<?php
}

// this function prevents edits to existing posts from auto-posting
add_action('transition_post_status','sfc_publish_auto_check',10,3);
function sfc_publish_auto_check($new, $old, $post) {
	if ($new == 'publish' && $old != 'publish') {
		$post_types = apply_filters('sfc_publish_post_types', get_post_types( array('public' => true), 'objects' ) );
		foreach ( $post_types as $post_type ) {
			if ( $post->post_type == $post_type->name ) {
				sfc_publish_automatic($post->ID, $post);
				break;
			}
		}
	}
}

function sfc_publish_automatic($id, $post) {

	// check to make sure post is published
	if ($post->post_status !== 'publish') return;

	// check options to see if we need to send to FB at all
	$options = get_option('sfc_options');
	if (!$options['autopublish_app'] && !$options['autopublish_profile'])
		return;

	// build the post to send to FB

	// look for the images/video to add with image_src
	$images = sfc_base_find_images($post);
	$video = sfc_base_find_video($post);
	if (preg_match('|http://[^/]*youtube\.com/v/([^/?&]+)|i', $video[''], $matches) ) {
		array_unshift($images, "http://img.youtube.com/vi/{$matches[1]}/0.jpg");
	}

	// build the attachment
	$permalink = apply_filters('sfc_publish_permalink',wp_get_shortlink($post->ID),$post->ID);
	$attachment['name'] = $post->post_title;
	$attachment['link'] = $permalink;
	$attachment['description'] = sfc_base_make_excerpt($post);
	$attachment['caption'] = ' ';
	
	if (!empty($images)) $attachment['picture'] = $images[0];
	if (!empty($video)) $attachment['source'] = $video[''];

	// Actions
	$actions[0]['name'] = 'Share';
	$actions[0]['link'] = 'http://www.facebook.com/share.php?u='.urlencode($permalink);

	$attachment['actions'] = json_encode($actions);
	
	// publish to app or page
	if ($options['autopublish_app'] && !get_post_meta($id,'_fb_post_id_app',true) ) {

		if ($options['fanpage']) {
			$url = "https://graph.facebook.com/{$options['fanpage']}/feed";
			$attachment['access_token'] = $options['page_access_token'];
		}
		else {
			$url = "https://graph.facebook.com/{$options['appid']}/feed";
			$attachment['access_token'] = $options['app_access_token'];
		}

		$data = wp_remote_post($url, array('body'=>$attachment));

		if (!is_wp_error($data)) {
			$resp = json_decode($data['body'],true);
			if ($resp['id']) update_post_meta($id,'_fb_post_id_app',$resp['id']);
		}
	}

	// publish to profile
	if ($options['autopublish_profile'] && !get_post_meta($id,'_fb_post_id_profile',true)) {

		$url = "https://graph.facebook.com/{$options['user']}/feed";

		// check the cookie for an access token. If not found, try to use the stored one.
		$cookie = sfc_cookie_parse();
		if ($cookie['access_token']) $attachment['access_token'] = $cookie['access_token'];
		else $attachment['access_token'] = $options['access_token'];

		$data = wp_remote_post($url, array('body'=>$attachment));

		if (!is_wp_error($data)) {
			$resp = json_decode($data['body'],true);
			if ($resp['id']) update_post_meta($id,'_fb_post_id_profile',$resp['id']);
		}
	}
}

add_filter('sfc_validate_options','sfc_publish_validate_options');
function sfc_publish_validate_options($input) {
	$options = get_option('sfc_options');

	if (isset($input['autopublish_app']) && $input['autopublish_app'] != 1) $input['autopublish_app'] = 0;
	if (isset($input['autopublish_profile']) && $input['autopublish_profile'] != 1) $input['autopublish_profile'] = 0;

	unset($input['user']);
	unset($input['page_access_token']);
	unset($input['app_access_token']);

	// find the access token and save it if it's there
	$cookie = sfc_cookie_parse();
	if ($input['access_token']) {
		$input['user'] = $cookie['user_id'];

		// for fan pages, we need to go get their access token
		if ($input['fanpage']) {
			// connect to FB, find a list of the available Pages
			$data = wp_remote_get("https://graph.facebook.com/{$input['user']}/accounts?access_token={$input['access_token']}", array('sslverify'=>false));
			if (!is_wp_error($data)) {
				$pages = json_decode($data['body'],true);
				if ( is_array( $pages ) && isset( $pages['data'] ) ) foreach ($pages['data'] as $page) {
					if ($page['id'] == $input['fanpage']) {
						$input['page_access_token'] = $page['access_token'];
						break;
					}
				}
			}
		}

		// get application access token
		$data = wp_remote_get("https://graph.facebook.com/oauth/access_token?client_id={$input['appid']}&client_secret={$input['app_secret']}&type=client_cred", array('sslverify'=>false));
		if (!is_wp_error($data)) {
			$token = $data['body'];
			if (strpos($token,'access_token=') !== false) {
				$input['app_access_token'] = str_replace('access_token=','',$token);
			}
		}
	}

	return $input;
}

// fix crazy shortlink nonsense
add_filter('sfc_publish_permalink', 'sfc_publish_shortlink_fix', 10, 2);
function sfc_publish_shortlink_fix($link, $id) {
	if (empty($link)) $link = get_permalink($id);
	return $link;
}